How to restore an entire server from a .sql file created with PGAdmin Backup Server?

On 18 August 2011 00:29, Robert Frantz wrote:

**

I backed up my server using PGAdmin to plain text from one 9.0 server and
now I want to restore it to another 9.0 server.



But when I highlight the server in the tree, under the tools menu, restore
is grayed out.



The only references I've found discuss restoring individual databases with
psql.



How do I restore an entire server from a .sql file (using PGAdmin?)